KR20130083993A - Emergency escape ladder - Google Patents

Abstract

PURPOSE: An emergency escape ladder is provided to minimize the same with folding a ladder unit with a small size, thereby unfolding the same with a long length in use. CONSTITUTION: An emergency escape ladder includes a housing (100), a holding unit (200), two rotating brackets, a ladder unit (400), and a folding unit. The housing includes a rectangular frame having an inner housing part, and an upper and a lower door. The holding unit on the inner wall of the housing part supports the ladder unit. The rotating brackets are rotatably coupled to both ends of the holding unit. The ladder unit is coupled to the turning brackets, and is placed in the frame with being folded when each door is closed. The ladder unit is unfolded downwards by the rotation of the brackets when each door is opened. The folding unit refolds the unfolded ladder unit.

Description

Emergency escape ladder {EMERGENCY ESCAPE LADDER}

The present invention relates to an emergency escape ladder which is installed in a veranda of a multi-layered building such as an apartment or a villa to quickly evacuate from an upper floor to a lower floor in an emergency such as a fire.

As a technology related to the emergency escape ladder, Korean Patent Publication No. 10-1037582 (announced May 27, 2011, hereinafter referred to as 'prior art') has been proposed, "floor installation type evacuation ladder device having an improved ladder" have.

The prior art, "upper and lower open frame and the upper door and the lower end is pivotally coupled by a hinge to one side of the upper and lower sides of the frame to open and close the upper and lower parts of the frame. A door, a ladder which is folded inside the frame and is used to be lowered when in use, a descending machine which returns to the inside of the frame while folding the ladder which is lowered to the lower floor, and a link connecting the upper door and the lower door to be interlocked. In the floor-mounted evacuation ladder device consisting of members,

The ladder,

A plurality of ladder members consisting of a pair of support frames and a scaffold frame connecting upper ends of the pair of support frames to be vertically deployed to the bottom of the frame; And

And a connection member fixedly mounted to the lower front surface of the support frame of one of the ladder members and slidably connected to the back of the support frame of the other ladder member.

The scaffold frame has a "∩" shape in cross section when viewed from the side, and an upper side of the support frame is inserted through an open lower portion, and the inserted support frame is fixedly mounted by screws fastened from the outside of the scaffold frame. As being characterized by "

It has a simple and easy to assemble structure, it is easy to deploy the ladder downstairs, it is a technology to minimize the distortion and shaking of the ladder.

The prior art is to facilitate the fabrication and assembly of the structure in which each of the ladder members forming the ladder sliding deployment,

As each ladder member is folded in a stacked form, there is a problem in that the apparatus is enlarged as compared with the length of the laid ladder.

Emergency escape ladder according to the present invention to solve the above problems,

A housing including a quadrangular frame having an upper and lower inner receiving portion, and upper and lower doors hinged to upper and lower portions of the frame, respectively;

A holding unit mounted on an inner wall of the receiving part of the frame;

Two pivoting brackets pivotally coupled to both ends of the holding unit; And

A ladder unit coupled to the two pivot brackets, the ladder unit being disposed in the receiving portion of the frame in a folded state when the respective doors are closed, and being pivoted by the pivot brackets when the respective doors are opened;

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The ladder unit

Two rods each of which is coupled to the two turning brackets and is composed of a plurality of powders connected in a telescopic type;

A plurality of cross bars interconnecting the powders facing each other in the two cross bars, and

A plurality of link members interconnecting two cross bars disposed adjacent to each other and being folded and unfolded along the cross bars;

And a control unit.

According to another aspect of the present invention,

The link members are respectively coupled to both ends of the crossbar,

Two link bars pivotally coupled to ends of two crosspieces disposed adjacent to each other,

A hinge shaft for pivotally connecting the two link bars to each other, and

A torsion spring coupled to the hinge axis to allow the two link bars to fold toward the inside of the two longitudinal poles;

.

According to another feature of the invention,

Further comprising a sub ladder unit coupled to the ladder unit,

The sub ladder unit is

Two sub-vanes consisting of multiple sub-powders connected in telescopic type,

A connecting bracket connecting the lowest powder among the powders and the highest powder among the sub powders;

A plurality of sub-rows that interconnect each sub-powder facing each other in the two sub- verticals,

A relay member connecting the sub powders and the sub rails to each other, wherein the sub rails are arranged on the same line as the cross bars; and

A plurality of sub-link members arranged adjacent to each other, and a plurality of sub-link members connected to each other and having a cross-bar adjacent to each other and folded and unfolded along the sub-vertical bars.

.

According to another feature of the invention,

Folding means for returning the ladder unit in the unfolded state to the folded state and a deceleration unit for limiting the unfolding speed of the ladder unit is provided,

The folding means

A wire connected to the lower end of the ladder unit,

Bobbin is wound, the bobbin is pivotally coupled to the support plate,

A ratchet wheel coupled to a rotating shaft formed on the bobbin and pivoting with the bobbin, and

A pedal member pivotally coupled to the support plate or the frame and having a pawl for the ratchet wheel

Including,

The reduction unit

A cover member having an inner accommodating space and coupled to a supporting plate of the holding unit;

A fixed disk having a plurality of recesses radially arranged on an outer circumferential surface thereof, the fixed disk being coupled to the rotary shaft of the bobbin and disposed in the receiving space of the cover member;

A plurality of frictions which are mounted at the centers of both sides to be fitted to the side walls of the recesses, and are mounted in the recesses of the fixed disk by the mounting grooves, and are in contact with the side walls of the receiving spaces of the support plate or the cover member. block

.

According to another feature of the invention,

Interlocking opening and closing means for the upper and lower doors are provided,

The interlocking opening and closing means

A first interlocking member having a hinge coupling part pivotally mounted to an inner wall of the receiving part of the frame, and upper and lower connecting parts disposed up and down at an obtuse angle with each other;

A second interlocking member, one end of which is pivotally coupled to the upper door, and the other end of which is pivotally coupled to an end of the upper connection portion of the first interlocking member, and

A third interlocking member having one end pivotally coupled to the lower door and the other end pivotally coupled to an end portion of the lower connection portion of the first interlocking member;

Including,

The other end of the second interlocking member is formed with a closing prevention stopper that is caught on the upper connection portion of the first interlocking member when the upper door is opened.

According to another feature of the invention,

Both ends of the holding unit is formed with a through coupling portion,

The pivot bracket is formed by a protruding portion formed by a burring process to be pivotally inserted into the coupling portion,

The other end of the second linking member is formed with a through-type fastening portion,

A corresponding fastening part is formed at the end of the upper connection part of the first interlocking member so as to protrude by burring to be pivotally inserted into the fastening part.

According to another feature of the invention,

Lock means for each door is provided,

The locking means

A locking portion formed on the lower surface of the upper door,

A snap member having an upper corresponding catch portion secured by being caught by the catch portion, a lower slot for initial opening of the upper door, and

Fastening member fastened to the inner wall of the receiving portion of the frame through the slot of the snap member

.

According to another feature of the invention,

An end portion of the lower connecting portion of the first interlocking member and the other end of the third interlocking member are connected to each other by a hinge bolt.

The other end of the third interlocking member is formed with a long hole in which the hinge bolt slides at the initial opening of the upper door.

Emergency escape ladder according to the present invention,

By connecting the longitudinal pole in the telescopic type, the ladder unit can be folded to a smaller size, thereby minimizing the ladder, there is an effect that can be extended to a longer length when using.

In addition, as the torsion spring is provided in the link member, there is an effect of preventing the link member from being folded toward the outside of the longitudinal rod.

In addition, by connecting the sub-ladder unit to the ladder unit has the effect of extending the length of the spread ladder.

In addition, as the folding means is provided, it is possible to easily return the unfolded ladder unit, and as the deceleration unit is provided, the ladder unit can be prevented from being suddenly unfolded.

In addition, the stopper is provided in the interlocking opening and closing means has the effect of preventing the closing of the upper door during emergency escape.

In addition, since the pivoting bracket and the first interlocking member are pivotably coupled by the corresponding coupling portion and the corresponding coupling portion formed by the burring process, the assembly is easy and the manufacturing cost is reduced.

In addition, as the locking means for each door is provided, there is an effect that can prevent each door is opened by the weight of the ladder unit when the ladder is not in use.

In addition, since the long hole is formed in the third interlocking member, there is an effect that the interlocking opening of the lower door is prevented when the upper door is initially opened for unlocking.

1 is a perspective view of the emergency escape ladder according to an embodiment of the present invention.
Fig. 2 is a side sectional view of Fig. 1; Fig.
Figure 3 is a side cross-sectional view of the housing, interlocking opening and closing means in Figure 2;
Figure 4 is a side cross-sectional view showing a state in which the upper door is initially opened in FIG.
Figure 5 is a side cross-sectional view showing a state in which the upper and lower doors in Figure 3 open.
Figure 6 is a side cross-sectional view of the holding unit, the turning bracket and the ladder unit in FIG.
7 is a perspective view of Fig. 6; Fig.
8 is a perspective view illustrating an unfolded state of the ladder unit of FIG. 7;
9 is an exploded perspective view of FIG. 8;
10 is a cross-sectional view of the folding means and the reduction unit in FIG.
Figure 11 is a side cross-sectional view showing the main components of the emergency escape ladder according to another embodiment of the present invention.
12 is a perspective view of FIG. 11;

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

For reference, "A" of FIG. 2 is a perspective view of the corresponding part, "B" of FIG. 5 is an exploded perspective view of the corresponding part, "C" of FIG. 5 is a perspective view of the corresponding part, "D" and of FIG. "E" and "F" in FIG. 9 are enlarged views of the corresponding part.

1 to 10, the emergency escape ladder according to an embodiment of the present invention (hereinafter referred to as 'ladder') is largely the housing 100, holding unit 200, the turning bracket 300, ladder unit 400 and the folding means 800.

Looking at each configuration below,

The housing 100 is

As shown in Figs. 1 to 5,

Square frame 110 having an upper and lower opening (111) the inner receiving portion, and

The upper and lower doors 120 and 130 are hinged to the upper and lower portions of the frame 110, respectively.

Here, the upper and lower doors 120 and 130 are opened and closed in a symmetrical form with respect to the frame 110, and the housing 100 has interlocking opening and closing means for the upper and lower doors 120 and 130 ( 600).

The interlocking opening and closing means 600 is

As the lower door 130 is interlocked to open and close when opening and closing the upper door 120,

As shown in Figures 3 to 5,

The hinge coupling part 611 is pivotally mounted on the inner wall of the receiving part 111 of the frame 110, and has upper and lower connecting parts 612 and 613 disposed up and down at an obtuse angle with each other. First interlocking member 610,

A second interlocking member 620 rotatably coupled to one end of the upper door 120 and rotatably coupled to an end of the upper connecting portion 612 of the first interlocking member 610; and

One end is rotatably coupled to the lower door 130, the other end comprises a third interlocking member 630 rotatably coupled to the end of the lower connection portion 613 of the first interlocking member 610.

That is, in the interlocking opening and closing means 600, the first interlocking member 610 is pivoted by the second interlocking member 620 when the upper door 120 is opened. The lower connection part 613 of the 610 pushes the third interlocking member 630 downward so that the lower door 130 is opened together with the upper door 120.

In addition, when the upper door 120 is closed, as the first interlocking member 610 pivots in the opposite direction to the opening, the lower connecting portion 613 pulls the third interlocking member 630 upward. The lower door 130 is closed together with the upper door 120 by being raised.

On the other hand, as shown in "B" of FIG. 5, the other end of the second interlocking member 620 is caught by the upper connecting portion 612 of the first interlocking member 610 when the upper door 120 is opened. The stopper 621 may be formed.

The stopper 621 is caught by the upper connection part 612 by pressing the first and second interlocking members 610 and 620 toward the upper door 120 after fully opening the upper door 120. Accordingly, the stopper 621 prevents the upper door 120 from being closed by its own weight and external force.

The holding unit 200 is

As it is mounted on the inner wall of the receiving portion 111 of the frame 110 to support the ladder unit 400 to be described later,

As shown in FIG. 2, and FIGS. 6 to 9,

Two fixing brackets 210 spaced apart from each other and mounted on an inner wall of the receiving portion 111 of the frame 110, and

It comprises a support plate 220 which is interposed on the two fixing bracket (210).

The turning bracket 300 is

As shown in Figures 7 to 9,

Two pieces are provided and are rotatably coupled to both ends of the holding unit 200, respectively.

As shown in Figure 9 for the coupling of the turning bracket 300 and the holding unit 200,

Through-type coupling portions 211 are formed in each of the fixing brackets 210 disposed at both ends of the holding unit 200,

The turning bracket 300 is formed with a corresponding coupling portion 310 protrudingly formed by a burring process to be pivotally inserted into the coupling portion 211.

According to such a coupling structure, there is no need for a separate fastening means such as bolts and nuts, it is easy to assemble when manufacturing the ladder and manufacturing cost can be reduced.

And such a coupling structure can be applied to the interlocking opening and closing means 600.

As shown in “B” of FIG. 5, a through type fastening part 622 is formed at the other end of the second interlocking member 620.

A corresponding fastening part 614 is formed at the end of the upper connection part 612 of the first interlocking member 610 by protruding by burring to be pivotally inserted into the fastening part 622.

The first and second interlocking members 610 and 620 are rotatably coupled to each other.

On the other hand, as shown in Figure 9 the rear end of the turning bracket 300 is provided with a engaging piece 320 bent toward the folding means 230.

When the latching unit 320 is pivoted and the ladder unit 400 is unfolded downward, the locking piece 320 is in contact with the lower surface of the fixing bracket 210 to maintain the ladder unit 400 at a predetermined angle, to prevent the shaking thereof. Done.

The ladder unit 400 is

Is coupled to the two turning bracket 300, is disposed in the receiving portion 111 of the frame 110 in a folded state when the door (120, 130) closed, the opening of each door (120, 130) As it is to be swung by the turning bracket 300 to unfold downward,

As shown in Figures 6 to 9,

Two longitudinal poles 410 each coupled to the two turning brackets 300 and made up of a plurality of powders 411 connected in a telescopic type,

A plurality of cross bars 420 interconnecting the respective powders 411 facing each other in the two longitudinal bars 410, and

It comprises a plurality of link members 430 interconnecting two cross bars 420 disposed adjacent to each other, and be folded and unfolded along the cross bars 410.

Each powder 411 is made of a pipe having a different inner diameter is connected in the form of the powder 411 disposed on the lower side is inserted into the powder 411 disposed on the upper side, the powder 411 disposed on the top side is Welded to the turning bracket 300.

The crossbar 420 is coupled to the lower end of each of the powder 411 facing each other, as shown in "E" of Figure 8 is formed on the top and bottom of the anti-slip uneven portion 421.

The link member 430 is coupled to both ends of the cross 420,

As shown in "D" of FIG. 8,

Two link bars 431 pivotally coupled to ends of two cross bars 420 disposed adjacent to each other,

A hinge shaft 432 connecting the two link bars 431 to each other in a rotatable manner, and

The torsion spring 433 is coupled to the hinge shaft 432 to allow the two link bars 431 to fold toward the inside of the two longitudinal bars 410.

In this case, the torsion spring 433 has an upper end portion and a lower end portion caught by the two link bars 431, respectively, to exert an elastic force so that the two link bars 431 are folded toward the two longitudinal poles 410.

The link member 430 supports the cross bars 420 so that the respective powders 411 are not separated from each other. For this purpose, the link members 430 are connected to each other by the two link bars 431. It is preferable to have a length shorter than each said powder 411 when it unfolds.

The folding means 800

As to return the ladder unit 400 in the unfolded state to the folded state again,

As shown in FIG. 9,

Wire 810 is connected to the lower end of the ladder unit 400,

Bobbin 820 is wound, the wire 810 is rotatably coupled to the support plate 220,

A ratchet wheel 830 coupled to a rotation shaft 821 formed on the bobbin 820 and pivoting together with the bobbin 820, and

A pedal member 840 is pivotally coupled to the support plate 220 or the frame 110 and has a pawl 841 for the ratchet wheel 830.

Here, the wire 810 is connected to the lowermost rung 420 of the rung 420.

The pedal member 840 is usually arranged so that the detent 841 can fix the ratchet wheel 830,

Accordingly, when the user opens the upper and lower doors 120 and 130 and the ladder unit 400 pivots downward, the user presses on the pedal member 840 to latch the ratchet wheel by the detent 841. By releasing the fixed state of 830, the ladder unit 400 can be unfolded by its own weight.

When the ladder unit 400 is to be returned to the folded state again, a separate lever (not shown) is coupled to the rotation shaft 821 of the bobbin 820 to rotate the bobbin 820 to rotate the wire 810. ) Can be folded back to the leather unit (400).

9 and 10, the deceleration unit 900 is coupled to the holding unit 200 and the folding means 800.

The reduction unit 900 is for limiting the unfolding speed of the ladder unit 400,

A cover member 910 having an inner accommodating space 911 and coupled to the support plate 220 of the holding unit 200;

A fixed disk having a plurality of recesses 921 arranged radially on an outer circumferential surface thereof, and coupled to the rotation shaft 821 of the bobbin 820, and disposed in the receiving space portion 911 of the cover member 910. (920),

It has mounting grooves 931 to be fitted to the side wall of the recess 921 in the center of both sides, the mounting grooves 931 is mounted to each recess 921 of the fixed disk 920 by the mounting groove 931 and the support plate A plurality of friction blocks 930 in contact with the side wall 220 or the receiving space portion 911 of the cover member 910

.

Here, the friction block 930 is preferably made of a material such as cork, rubber, synthetic resin so as to increase the friction force with the side wall of the receiving space 911.

As shown in FIG. 10, the friction block 930 is in contact with the side wall of the accommodation space 911 of the cover member 910, but the support plate 220 is located in accordance with the position of engagement with the rotation shaft 821. May be touched).

As a result, the deceleration unit 900 increases the rotation speed of the bobbin 820 as the friction block 930 rubs against the side wall of the receiving space 911 of the support plate 220 or the cover member 910. By reducing, the ladder unit 400 is prevented from being unfolded suddenly.

2 to 4, the housing 100 may be provided with locking means 700 for each of the doors 120 and 130.

The locking means 700 is to prevent the doors 120 and 130 from being opened by the user's carelessness or the weight of the ladder unit 400 when the ladder is not in use.

The engaging portion 710 is formed on the lower surface of the upper door 120,

A snap member 720 having an upper corresponding catching portion 721 fixed to the catching portion 710, a lower slot 722 for initial opening of the upper door 120, and

It includes a fixing member 730 is fastened to the inner wall of the receiving portion 111 of the frame 110 through the slot 722 of the snap member (720).

Here, the "initial opening" means that the user partially opens the upper door 120 to unlock the upper door 120 as shown in FIG. 4.

As a result, the slot 722 allows the snap member 720 to be lifted on the fixing member 730 so that the upper door 120 can be initially opened.

Accordingly, the user may release the locked state by separating the catching portion 710 and the corresponding catching portion 721 in the initial opening state of the upper door 120.

And as shown in "C" of Figure 5, the lower end of the connecting portion 613 of the first linking member 610 and the other end of the third linking member 630 are interconnected by a hinge bolt 640. ,

The other end of the third interlocking member 630 is formed with a long hole 631 to which the hinge bolt 640 is fastened,

Here, the long hole 631 not only facilitates the interlocking operation of the doors 120 and 130, but also provides a space in which the hinge bolt 640 slides upon initial opening of the upper door 120. When the upper door 120 is initially opened for unlocking, interlocking of the lower door 130 is prevented.

Hereinafter, another embodiment of the present invention will be described with reference to FIGS. 11 and 12.

As shown, the ladder according to another embodiment of the present invention further comprises a sub-ladder unit 500 coupled to the ladder unit 400.

The sub ladder unit 500 is

Two sub-verticals 510 composed of a plurality of sub-powders 511 connected in a telescopic type,

A connecting bracket 540 for connecting the lowermost powder 411 of the powders 411 and the uppermost subpowder 511 of the respective subpowders 511 to each other,

A plurality of sub-rowers 520 interconnecting each of the sub-powders 511 facing each other in the two sub-lengths 510,

A relay member 550 connecting the sub powders 511 and the sub rail bars 520 so that the sub rail bars 520 are arranged on the same line as the cross bars 420, and

A plurality of sub-link members that are connected to each other adjacent to each other disposed side rails 520, and the cross bars 420 and the sub-railway 520 disposed adjacent to each other, and folded and unfolded along the sub-vertical 510. 530.

Here, the sub vertical stand 510, the sub side stand 520, and the sub link member 530 have the same configuration as the vertical stand 410, the cross piece 420, and the link member 430 of the ladder unit 400, respectively. The duplicate description thereof will be omitted.

The connecting bracket 540 is coupled so as to face the crosspiece 420 coupled thereto in the lowermost powder 411.

Accordingly, the sub vertical stand 510 is disposed below the vertical stand 410 when the ladder unit 400 and the sub ladder unit 500 are arranged in the receiving portion 111 of the frame 110 in a folded state. Is placed.

In this case, the relay member 550 is spaced apart from the sub vertical bar 510 from the sub vertical bar 510 disposed below the vertical bar 410, thereby connecting the respective sub street bars 520 to the respective horizontal bars 420. It is placed on the same line.

As a result, the sub-ladder unit 500 is expanded together with the ladder unit 400 when the doors 120 and 130 are opened, and thus the ladder of the present invention has a longer length when unfolded.

Naturally, the wire 810 of the folding means 800 is preferably connected to the lowermost sub-rail 520 of the sub-rail 520.

In the above description of the present invention with reference to the accompanying drawings has been described with reference to the "emergency escape ladder" having a specific shape and structure, the present invention can be variously modified and changed by those skilled in the art, such variations and modifications are It should be interpreted as falling within the protection scope of the invention.

100; housing
110; Frame 111; Receiving portion
120; Upper door 130; Lower door
200; Holding unit
210; Fixing bracket 211; Engaging portion
220; Support plate
300; Turning bracket
310; Counterpart 320; Jam
400; Ladder Unit
410; Longitudinal band 411; Powder
420; Crossbar 421; Uneven portion
430; Link member 431; Link bar
432; Hinge axis 433; Torsion spring
500; Sub Ladder Unit
510; Sub vertical band 511; Sub powder
520; Sub-street 530; Sub link member
540; Connecting bracket 550; The relay member
600; Interlocking switch
610; First interlocking member 611; The hinge-
612; Upper connection 613; Bottom connection
614; Counterpart 620; Second interlocking member
621; Stopper 622; The fastening portion
630; Third interlocking member 631; Long hole
640; Hinge Bolt
700; Locking means
710; Engaging portion 720; Snap member
721; Counterpart 722; slot
730; Fixed member
800; Folding means
810; Wire 820; Bobbin
821; Axis of rotation 830; Ratchet wheel
840; Pedal member 841; Detent
900; Reduction Unit
910; Cover member 911; Housing space
920; Fixed disk 921; Recess
930; Friction block 931; Mounting groove

Claims (8)

A housing 100 including a rectangular frame 110 having an upper and lower inner receiving portion 111, and upper and lower doors 120 and 130 hinged to upper and lower portions of the frame 110, respectively. ;
A holding unit 200 mounted on an inner wall of the receiving portion 111 of the frame 110;
Two turning brackets 300 rotatably coupled to both ends of the holding unit 200; And
Is coupled to the two turning bracket 300, is disposed in the receiving portion 111 of the frame 110 in a folded state when the door (120, 130) closed, the opening of each door (120, 130) A ladder unit 400 which is pivoted by the pivot bracket 300 to be unfolded downward;
Including,
The ladder unit 400
Two longitudinal poles 410 each coupled to the two turning brackets 300 and made up of a plurality of powders 411 connected in a telescopic type,
A plurality of cross bars 420 interconnecting the respective powders 411 facing each other in the two longitudinal bars 410, and
A plurality of link members 430 interconnecting two cross bars 420 disposed adjacent to each other, and being folded and unfolded along the cross bars 410.
Emergency escape ladder, characterized in that consisting of.
The method of claim 1,
The link member 430 is coupled to both ends of the cross 420,
Two link bars 431 pivotally coupled to ends of two cross bars 420 disposed adjacent to each other,
A hinge shaft 432 connecting the two link bars 431 to each other in a rotatable manner, and
A torsion spring 433 coupled to the hinge shaft 432 to allow the two link bars 431 to be folded toward the inside of the two longitudinal bars 410.
Emergency escape ladder, characterized in that consisting of.
The method of claim 1,
Further comprising a sub ladder unit 500 coupled to the ladder unit 400,
The sub ladder unit 500 is
Two sub-verticals 510 composed of a plurality of sub-powders 511 connected in a telescopic type,
A connecting bracket 540 for connecting the lowermost powder 411 of the powders 411 and the uppermost subpowder 511 of the respective subpowders 511 to each other,
A plurality of sub-rowers 520 interconnecting each of the sub-powders 511 facing each other in the two sub-lengths 510,
A relay member 550 connecting the sub powders 511 and the sub rail bars 520 so that the sub rail bars 520 are arranged on the same line as the cross bars 420, and
A plurality of sub-link members that are mutually disposed adjacent to each other the side rails 520 and the cross bars 420 and the sub side rails 520 disposed adjacent to each other, and folded and unfolded along the sub vertical bar 510. (530)
Emergency escape ladder, characterized in that consisting of.
The method of claim 1,
Folding means 800 for returning the ladder unit 400 in an unfolded state and a deceleration unit 900 for limiting the unfolding speed of the ladder unit 400 is provided,
The folding means 800
Wire 810 is connected to the lower end of the ladder unit 400,
Bobbin 820 is wound, the wire 810 is rotatably coupled to the support plate 220,
A ratchet wheel 830 coupled to a rotation shaft 821 formed on the bobbin 820 and pivoting together with the bobbin 820, and
A pedal member 840 rotatably coupled to the support plate 220 or the frame 110 and having a pawl 841 for the ratchet wheel 830.
, ≪ / RTI >
The reduction unit 900 is
A cover member 910 having an inner accommodating space 911 and coupled to the support plate 220 of the holding unit 200;
A fixed disk having a plurality of recesses 921 arranged radially on an outer circumferential surface thereof, and coupled to the rotation shaft 821 of the bobbin 820, and disposed in the receiving space portion 911 of the cover member 910. 920, and
It has mounting grooves 931 to be fitted to the side wall of the recess 921 in the center of both sides, it is mounted to each recess 921 of the fixed disk 920 by the mounting groove 931 and the support plate A plurality of friction blocks 930 in contact with the side wall 220 or the receiving space portion 911 of the cover member 910
Emergency escape ladder, characterized in that consisting of.
The method of claim 1,
Interlocking opening and closing means 600 for the upper and lower doors 120 and 130 is provided,
The interlocking opening and closing means 600 is
The hinge coupling part 611 is pivotally mounted on the inner wall of the receiving part 111 of the frame 110, and has upper and lower connecting parts 612 and 613 disposed up and down at an obtuse angle with each other. First interlocking member 610,
A second interlocking member 620 rotatably coupled to one end of the upper door 120 and rotatably coupled to an end of the upper connecting portion 612 of the first interlocking member 610; and
One end is pivotally coupled to the lower door 130, the other end is rotatably coupled to the end of the lower connecting portion 613 of the first linking member 610
, ≪ / RTI >
The other end of the second interlocking member 620 is an emergency characterized in that the closing stopper 621 is formed to be caught on the upper connecting portion 612 of the first interlocking member 610 when the upper door 120 is opened. Escape Ladder.
The method of claim 5,
Both ends of the holding unit 200 have a through coupling portion 211 is formed,
The turning bracket 300 is formed with a corresponding coupling portion 310 protrudingly formed by a burring process to be pivotally inserted into the coupling portion 211,
The other end portion of the second interlocking member 620 is formed with a through-type fastening portion 622,
Emergency escape, characterized in that formed in the end of the upper connecting portion 612 of the first interlocking member 610 is formed by a protruding by a burring process to be pivotally inserted into the fastening portion 622. ladder.
5. The method according to any one of claims 1 to 4,
Locking means 700 for each of the doors (120, 130) is provided,
The locking means 700 is
The engaging portion 710 is formed on the lower surface of the upper door 120,
A snap member 720 having an upper corresponding catching portion 721 fixed to the catching portion 710, a lower slot 722 for initial opening of the upper door 120, and
Fastening member 730 is fastened to the inner wall of the receiving portion 111 of the frame 110 through the slot 722 of the snap member 720
Emergency escape ladder, characterized in that consisting of.
The method according to claim 5 or 6,
Locking means 700 for each of the doors (120, 130) is provided,
The locking means 700 is
The engaging portion 710 is formed on the lower surface of the upper door 120,
A snap member 720 having an upper corresponding catching portion 721 fixed to the catching portion 710, a lower slot 722 for initial opening of the upper door 120, and
Fastening member 730 is fastened to the inner wall of the receiving portion 111 of the frame 110 through the slot 722 of the snap member 720
, ≪ / RTI >
An end of the lower connecting portion 613 of the first interlocking member 610 and the other end of the third interlocking member 630 are connected to each other by a hinge bolt 640.
Emergency escape ladder, characterized in that the other end of the third interlocking member 630 is formed with a long hole (631) for the hinge bolt 640 to slide at the initial opening of the upper door (120).

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